Steelwrist has extended its SQ technology to include the SQ40 automatic coupler for compact excavators. SQ40 allows for quick changes of high flow-powered work tools on smaller excavators also, providing the same level of efficiency as for larger SQ couplers. This makes changing powered work tools easier and safer because it can be done without leaving the cab.
The SQ40 size brings the SQ auto-connection technology to excavators between 2-7tonnes and can be integrated onto the X07 tiltrotator and the XR7 rotor coupler.
With SQ technology, it is possible to connect both hydraulics and electrical signals in one movement. With the introduction of the new SQ40 size Steelwrist’s product range includes eight different SQ quick coupler models (SQ40-SQ90) for excavators from 2-70tonnes. SQ40 is specifically designed for the growing segment of compact excavators between 2-7 tonnes.
Significant development efforts have gone into the design of the new SQ40 automatic coupler and one very critical criterion was to ensure the flow required to power demanding hydraulic work tools. The SQ40 coupler is optimised to achieve a flow of 70 litres/min, thanks to a new and innovative coupling that provides 40% more flow area compared to a standard 9.5mm coupling.
With the SQ40 automatic machine coupler Steelwrist also introduces the new H6 electrical connector that builds on the years of experience with the Open-S V14 electrical connector. The H6 is a 6-pin electrical connector which is fully integrated to the SQ40 locking wedge and has a moulded design to ensure that it is environmentally sealed. Large contact surfaces and strong spring-loaded pins ensure reliable electrical transmission and high current capabilities. The core of the contacts is hardened phosphor bronze which results in effective corrosion-resistant properties when exposed to harsh conditions, as well as a hardness similar to that of steel, to ensure a long service-life.
